Lubricant and process of preparing same



Patented July '24, 1923.

RUSSELL GEORGE PELLY, OF LONDON, ENGLAND, ASSIGNOR TO TECHNICAL RESEARCHWORKS, LIMITED, OF LONDON, ENGLAND.

LUBRICANT AND PROCESSOR PREPARING SAME.

No Drawing.

7 '0 all whom it may concern:

Be it known that I, RUSSELL GEORGE PELLY, a subject of the King of GreatBritain, and resident of London, England, have invented acertain new anduseful Lubricant and Process of Preparing Same, of which the followingis a specification.

This invention relates to an improved process for increasing thelubricating properties of oils. Admixtures of saponifiable oils, fats orwaxes with mineral hydrocarbon oils (compounded oils) have been employedas lubricants to a large extent, it bein Well known that mineralhydrocarbon oil s are not so efiicient for use as lubricants in manycases as saponifiable oils, fats or waxes of animal or vegetable origin.

For the purpose of carrying out my invention I add to mineral oils or tosaponifiable oils, fats, or waxes derivatives of aliphatic polyhydricalcohols or phenols in which the hydroxyl groups are partially replacedby fatty and/or other acid radicles, for example the monoglycerides ofsuch fatty acids as oleic or lauric acid, which results in theproduction of a lubricating oil of greater efiiciency and by theselection of substances bf the nature mentioned valuable properties,such as the stiffening of the consistency and the emulsification withaqueous liquids may be imparted to saponifiable or mineral oils.

For example I have found that the addition of five per cent of monoordiglyceride of oleic acid to an ordinary mineral lubrieating oil reducesthe c'o-eflicient of friction Application filed September 29, 1922.Serial No. 591,420.

and improves its emulsifying property in water. 7

The compounds which have been found to give the best results in myinvention are the monoand diglycerid'es of the common fatty acids (forexample, oleic, lauric or stearic acids); in other words, a polyhydricalco- 1. That method of increasing the lubricating properties of oilswhich consists in adding to said oils the derivatives of aliphaticpolyhydric alcohols formed by partially repliicing the hydroxyl groupsby acid radica s.

2. A composition of matter consisting of lubricating oil and aliphaticpolyhydric a1- cohols of which the. hydrox 1 groups are partiallyreplaced by acid ra icals, substantially as described.

3. A composition of matter consisting of lubricating oils and aliphaticpolyhydric alcoholsof which one (OH) group is partially replaced by anacid radical formin a monoglyceride, substantially as describe Intestimon whereof I aflix my si ature.

RU SELL GEORGE PE LY.

